Taee-off and leering conveyer for sheet glass forming machines



IvvE/vro ATTORNEYS.

Richard Genenger,

R. GENENGER Oct. 27, 1931.

TAKE-OFF AND LEERING CONVEYER FOR SHEET GLASS FORMING MACHINES Filed April 4, 1929 Patented @et 27, lt

STATES RICHARD GENENGER, OE AACHEN-FORST, GERMANY, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE AMERICAN BICHEROUX COMPANY, A CORPORATION OF DELAWARE TAE-OFF AND LEERING- CONVEYER FOR GLASS FORMIN'G MACHINES Application led April 4, 1929, Serial No. 352,487, and in Germany April 7, 1928.

The invention herein disclosed relates to a device for receiving sheets of glass, after their formation in a machine, and for mov- Y face of the sheets to feed them in the line of travel at the 'desired speed, which may be greater than, or less than, or equal to, the speed of formation of thesheets. The speed of sheet movement, may, if desired, at one point of travel of the sheet be greater than, and at another point in such travel, less than the speed of formation, thus providing for the change of speed of movement of a sheet formed on a high speed intermittent forming machine, which is desirable in leering the same. The invention further consists in the construction, arrangement, and combination of the parts of which it is composed, as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings in which corresponding parts are designated by corresponding marks of reference:

Figures 1, 2 and 3 are vertical longitudinal sections through devices embodying this invention, each showing a diiferent type of sheet supporting bed at the entrance section of a leer. Y

In these, drawing A is a suitable forming, preferably of the type used in making glass sheets by the Bicheroux process, such for instance, as that described in United States Patent 1,673,098 of June 12th, 1928. This machine comprises two forming rolls a, between which is a pass a at which the glass sheet is formed, and from which it slides down the apronaz. The glass, after its delivery from the apron is received on a bed B on which it moves in its travel from the forming machine. This bed may be of diverse constructions. In Figure 1, the irst section B of the leer F consists of a series of chamotte blocks Z2 between which, and at the ends of which, are rollers C, which are driven lonly by glass resting thereon, and of a series of rollers D driven at any desired speed by a suitable common drive shaft E. The chamotte blocks are shown as being located at the entrance section of a leer F, and if used should extend such a distance from the forming machine so that the sheets will be sufiiciently set before leaving them, and the rollers C and G should be separated by a distance less than the length of the sheets to be annealed. In Figure 2, the chamotte blocks of Figure l are replaced by metallic blocks b2, which may, as shown, be hollow for the purpose of controlling their tempera-i ture. By preference, if these metallic blocks are used, their upper surfaces on which the sheet rests, are serrated to retard the transfer of heat between the sheet and the bed. In Figure 3 the blocks 61 and b2 of Figures 1 and 2, are replaced by rollers b3, which like the rollers C, are'idlers, i. e., driven merely by the movement of a sheet resting thereon. If desired, the rollers D may be idlers, as is indicated in Fig. 3 by the absence of any showing of the shaft.

Over each roller C, is located a roller G. The rollers G are capable of being raised or lowered in proper sequence by suitable mechanisms H, and are driven by a suitable mechanism, not shown, at desired speeds. By preference, the speed ofthe first roller is such as to exert a drag on the sheet as it is formed, and each following roller G, has such a speed that it tends to drag glass away from the preceding roller, whereby the sheet will, up to the time it has set, be under tension, and the swelling of the plates, with the resultant unevenness of the plate be prevented.

In the use of a device such as above described, a sheet of glass formed at the pass a at relatively high speed, is fed to the leer, its forward end entering between the first pair of rollers CL-G, the latter being at that time raised. The iirst roller G is then lowered upon the front end of the sheet, whereupon the sheet will be fed into the leer by aid of the drag imparted thereto by the rotation of the roller. As the` sheet advances over the bed B, this action will be repeated at each succeeding pair of rollers C, G, the last of such pairs delivering the sheet to the rollers D. By preference, the peripheral speed of these rollers is less than the speed of sheet formation, and therefore less than the rate of feed of the sheet by the last pair of rollers C-G, and is one adapted for .the proper leering of the sheet. This change in speed of the sheet is permitted by the slip between the sheet and the rollers C, G, on the' one hand,

ceiving the sheets from the last of the upper rollers. f

6. The combination with a sheet glass forming machine of a leer for the glass formed thereby, a bed within the leer adapted to support the sheets and consisting of a series of blocks, idler rollers` interposed in the bed, and driven rolls above the idler rolls, with mcms for lifting and lowering the upper ro s.

7 The combinatiom; with a sheet glassl forming machine, of a leer for the glass formed thereby, a bed within the leer adapted to support the sheets, and consisting of a series of blocks withserrated upper faces, idler rollers interposed'in the bed, and driven rolls above the idler rolls, with means for lifting and loweringthe upper rolls.

In testimony whereof I have hereunto affixed by signature. n

RICHARD GENENGER.

2. The combination with a sheet glass l forming machine, of a leer for the glass formed thereby, and means for feeding such glass into the leei` comprlsing a supporting bed having idler rollers at intervals therein, and driven rolls above the idler rolls, with means for lifting and lowering the upper roller, the speed of several upper rollers increasing with their distance from the forming machine.

3. The combination with a sheet glass forming machine, of a leer for the glass formed thereby, and means for feeding such glass into the leer comprising a supporting bed having idler rollers at intervals therein, and driven rolls abovey the idler rolls, with means for lifting and lowering the upper roller, the speed of the several 'upper rollers increasing with their distance from the forming mgachine, the several upper rolls being driven at such a speed that they tend to feed the sheet forward at a speed higher than the speed at which it is formed.

4. The combination with la sheet glass forming machine, of a leer for the glass formed thereby, and means for feeding such glass into. the leer comprising a supporting bed having idler rollers at intervals therein, and driven rolls above the idler rolls, with means for lifting and lowering the upper rolls, and a roller conveyer receiving the sheets fromv the last of the upper rollers. z

5. The combination with a sheet glass forming machine, of a leer for the glass l formed thereby, and means for feeding such glass into the leer comprising a supporting bed having idler rollers at intervals therein, and driven rolls above the idler rolls, with means for lifting and lowering the upper., rollers, the several upper rolls being 'driven eat such a speed that they tend to feed the sheet forward at a speed higher than the speed at which itis formed, and a roller conveyer re- 

